second derivative 中文意思是什麼

second derivative 解釋
二次導數
  • second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
  • derivative : adj. 導出的；派生的。n. 1. 派生物。2. 【語言學】派生詞。3. 【化學】衍生物。4. 【醫學】誘導法[劑]。5. 【數學】導數，紀數，微商。adv. -ly
  1. Discontinuous oblique derivative problems for second order mixed equations with parabolic degeneracy

    帶拋物退化線的二階混合型方程的間斷斜微商
  2. Oblique derivative problems for second order quasilinear equations of mixed type with parabolic degeneracy

    二階擬線性退化混合型方程的斜微商問題
  3. Finally, this thesis discussed these following questions : first, the algorithm of used the error image for improving the purpose of the edge detection. secondly, we have transformed the solved question of the first and the second directional derivative to frequency domain and founded they have a single formulae in frequency domain. thirdly, we have described the singular signal and the noise by using the correlations of the neighbor data after wavelet transform

    最後，在傳統的邊緣檢測演算法和小波分析的邊緣檢測演算法之外，對以下幾個方面也進行了一些討論： 1 ）利用誤差圖像來提高邊緣檢測效果的演算法； 2 ）將求解任意方向的一階、二階方向導數的問題轉換到頻域中去求解，發現在頻域中它們具有簡單易用的公式，使得原來求解任意方向的一階、二階導數的比較困難的問題變得容易實現了。
  4. Presents a new method for fairing of curves which has a small flexibility based on fitting the derivative of second order of curves. we fit the derivative of second order of curves by a polynomial fitting, then find an indefinite integral of this polynomial to get a approach of curves. otherwise, we discuss the analyze of the error and the optimize of fairing to this arithmetic

    提出了一種針對小撓度曲線的逆向曲線光順演算法，該演算法直接擬合曲線型值點列的二階導數曲線，然後通過兩次積分來反求出光順后的曲線，並對該演算法的誤差分析、效果分析、光順優化等問題進行了深入探討。
  5. Determination of micro zinc with 1 - 2 - pyridylazo - 2 - naphthol by second - derivative spectrophotometry

    二階導數分光光度法測定微量鋅
  6. Second, the financial markets innovation accelerated financial derivative products. free float age brings opportunity for the securities dealers ’ service and product innovation

    如何更好地化解和控制這些風險將是券商持續穩健發展的重中之重。
  7. In chapter 2 there are four goals : the first is to investigate some geometric properties of h - caccioppoli sets, the second is to characterize the discontinuous set su and jump set ju of u bvh ( ), the third is to study pointwise behavior of u bvh ( ) and our effort is concentrated on showing approximate differentiability of u in the sense of pansu ' s, while the last and the most important is to show that dhu with u bvh ( ) as a radon measure can be split into three parts ( absolutely continuous part, jump part and cantor part, respectively ) just like the derivative of a bv function in the setting of euclidean space

    第二章有四個目標：一是討論h - caccioppoli集的若干幾何性質，二是刻畫h -有界變差函數的近似不連續點集和跳躍點集的特徵，三是研究u bv _ h （ ）的逐點行為，我們集中討論u在pansu意義下的近似可微性，最後也是最重要的目標我們證明對u bv _ h （ ） ， d _ hu作為radon測度能夠分解成絕對連續部分、跳躍部分和cantor部分之和。
  8. Second, this paper analyzes the relation of reactive support service with voltage, power limit curve, transaction amounts. according to the power limit curve, this paper analyzes the source of the reactive cost to get an interzone cost function. using marginal cost theory, it concludes that the reactive spot price is the derivative of the cost function in generator buses

    另外，本文還從發電機角度上分析了無功服務與電壓、功率限制曲線、發電機向負荷傳輸電能大小的關系；根據功率限制曲線對發電機無功成本的來源進行詳盡剖析，從理論上確定一個分區間的成本函數；並依據短期邊際成本理論可推出，計算發電機節點的電價可採用無功成本函數的偏導數的方法。
  9. The function (f')is usually written simply f" and is called the second derivative.

    函數（f』）通常簡寫成f」，並稱之為f的二階導數。
  10. Study on method of determination of the content of sesame oil by second derivative ultraviolet spectrophotometry

    用二階導數紫外分光光度法直接測定芝麻油含量
  11. The second part has summarized from the one - dimension and multivariate respects the abundant approximation properties of bernstein polynomials, mainly including the estimation of approximation degree, derivative approximation, linear combination approximation and weighted approximation

    第二部分從一元和多元兩個方面系統總結了bernstein運算元豐富的逼近性質，主要包括逼近度估計、導數逼近、線性組合逼近和加權逼近等
  12. The result indicates that this method is feasible. the first derivative of kinematic parameters can been calculated well while the second ones can ’ t which need filter

    其中一階運動學參數求解效果較好，而二階運動學參數並不是很理想，摻雜進了高頻噪聲，需要進行濾波處理。
  13. Without grids, the interaction effect among neighboring particles can be simulated by means of the kernel function, based on which the governing equation is discretized by establishing the smoothing model, the gradient model and the second - derivative model ( i. e. the laplacian model )

    在無網格條件下，粒子間的相互作用通過核子函數來表示，並通過建立物理量光滑模型、梯度模型和二階導數模型來離散控制方程。
  14. Bar code recognition is a matter of edge detection, which has long been done through the maximum value of the first derivative or zero crossing of the second derivative

    條碼識別是一個邊緣檢測問題。長期以來，邊緣檢測都是通過一階導數極大值或二階導數零交叉進行的。
  15. The wavelengths of reflectance peaks and vales are got by spectral derivative method in section 3. 3. mechanism of them is analyzed. red tide and normal seawater, as well as some different dominant species of red tide, such as chattonella marina and mesodinium rubrum, can be discriminated by using the wavelength information of second reflectance peak

    3 . 3節運用該方法得出了實驗赤潮水體光譜曲線的兩個反射峰和一個吸收峰的波長范圍，並對其產生機理進行了分析;更為重要的是，利用光譜曲線第二反射峰的波長位置實現了赤潮與非赤潮水體的光譜辨別，以及紅色中繞蟲、海洋褐胞藻等不同優勢種類赤潮的識別。
  16. Studied and proofed the relationship between the continuity of the interpolation spline function ' s derivative and its low - pass respondence in frequency domain. that is, we have try to answer the question : why do we need to design a spline function with second order continuity of its derivative

    推導了插值樣條函數的導數連續性與其頻率響應的低通性的關系，在數學上解釋了為何在構造樣條函數時要追求二階導數連續。
  17. A class of stiffly stable k - step second derivative methods of order 2k

    1階剛性穩定的二階導數方法
  18. Voltammetric behavior of venoruton and its determination by second derivative convolution voltammtry

    維腦路通的伏安行為及其二階導數卷積伏安法測定
  19. Based on the fourth - order difference formula of the second derivative term, a fourth - order finite difference method is developed for solving two - points boundary value problem

    摘要從中心差分公式出發，利用二階微分的四階差分公式，對兩點邊值問題得到了一種四階精度的差分格式。
  20. Since motion simulator focuses on reproduction of motion, it makes great sense to calculate its first and second derivative of kinematic parameters for improvement and evaluation of performance of motion simulator

    由於運動模擬器注重於動感的再現，因此， stewart平臺的一階、二階運動學參數的計算對提高運動模擬器的質量以及評價運動模擬器的性能具有重要的意義。
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